layoutmanager.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
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**********************************************************************/

#include <qvector.h>
#include <qvaluelist.h>
#include <qrect.h>
#include <qdatetime.h>
#include <qtopia/pim/event.h>
#include "datebookdb.h"

class LayoutItem
{
public:
    LayoutItem( const Occurrence e );

    void setGeometry(const QRect &rect) { r = rect; }
    void setGeometry(int x, int y, int w, int h) 
    { setGeometry(QRect(x,y,w,h)); }
    QRect geometry() const { return r; }

    Occurrence occurrence() const { return eevent; }
    PimEvent event() const { return eevent.event(); }

private:
    Occurrence eevent;
    QRect r;
};

class SortedLayoutItems : public QVector<LayoutItem>
{
public:
    SortedLayoutItems() : QVector<LayoutItem>() { }
    int compareItems( Item d1, Item d2 );
};

class LayoutManager
{
public:
    LayoutManager(int w, int h);
    virtual ~LayoutManager();


    virtual void setDate(const QDate &d);
    QDate date() const { return referenceDate; }

    virtual void setSize(int w, int h);
    void setMaximumColumnWidth(int x) { maxWidth = x; };
    int maximumColumnWidth() const { return maxWidth; };
    void setOccurrences(QValueList<Occurrence> &events);
    virtual void addOccurrence(Occurrence &event);

    virtual void clear() { mItems.clear(); }

    SortedLayoutItems items() const { return mItems; }
    QSize size() const { return QSize(width, height); }
    int count() const { return mItems.count(); }

    virtual void layoutItems(bool resetMaxWidth = FALSE);

    virtual int timeToHeight(const QTime &) const;
    virtual QTime heightToTime(int) const;

    virtual void eventsChanged() {}

protected:
    void initializeGeometry(LayoutItem *);
    LayoutItem *intersects(LayoutItem *, QRect, int = 0, int * = 0) const;
    void addItem(LayoutItem *);

    SortedLayoutItems mItems;
    int width;
    int height;
    int maxWidth;
    QDate referenceDate;
};